Lapsed, fee not paidUS 8,595,820 B1
Telecom & Networks · US 8,595,820 B1
Lapsed, fee not paid
Overlay network
US 8,599,697 B2 · Assignee: Level 3 Communications, LLC · Inventors: Ricciulli; Livio
Overview
Drawings on their way
This patent has 5 drawing sheets. They are being downloaded; every one is in the USPTO PDF now.
Open the USPTO PDFFull text on its way
This patent is listed from its USPTO record because it passed every check. Its abstract, claims and description are being downloaded from USPTO and will appear here within days. Until then, read it in the USPTO PDF or on Google Patents.
Why it's free to use
- The USPTO Official Gazette of January 27, 2026 lists it as expired on December 3, 2025 for an unpaid maintenance fee.
- It isn't on any reinstatement notice published since.
- Its 8 US relatives have also lapsed, expired or never issued.
- We check US rights only. Check foreign counterparts before selling abroad.
FiledMay 30, 2011
GrantedDecember 3, 2013
Expired (fee)December 3, 2025
Application number13/118569
Classification (CPC)H04L45/02 +7 more
Length22 pages
Drawings 5
The 5 drawing sheets are on the way. Every sheet is in the USPTO PDF.
Claims
On their way
The claims are being downloaded from USPTO and will appear here within days. Until then, read it in the USPTO PDF or on Google Patents.
Description
On its way
The description is being downloaded from USPTO and will appear here within days. Until then, read it in the USPTO PDF or on Google Patents.
Timeline & family
Timeline From USPTO dates
Maintenance fees
Fees are due 3.5, 7.5 and 11.5 years after grant. This patent expired on December 3, 2025, so the fee marked "not paid" was the one that went unpaid.
3.5-year feeDue June 3, 2017Paid
7.5-year feeDue June 3, 2021Paid
11.5-year feeDue June 3, 2025Not paid
US family 9 documents, by filing date
PatentUS 6,275,470 B1
On-demand overlay routing for computer-based communication networks
Filed Jun 1999 · granted Aug 2001Patent, expired (term ended)
Published applicationUS 2001/0037409 A1
On-demand overlay routing for computer-based communication networks
Filed Jun 2001 · published Nov 2001Published application
PatentUS 6,473,405 B2
On-demand overlay routing for computer-based communication networks
Filed Jun 2001 · granted Oct 2002Patent, expired (term ended)
Published applicationUS 2002/0018449 A1
On-demand overlay routing for computer-based communication networks
Filed Jul 2001 · published Feb 2002Published application
PatentUS 6,778,502 B2
On-demand overlay routing for computer-based communication networks
Filed Jul 2001 · granted Aug 2004Patent, expired (term ended)
Published applicationUS 2004/0022194 A1
On-demand overlay routing for computer-based communication networks
Filed Jul 2003 · published Feb 2004Published application
PatentUS 7,953,888 B2
On-demand overlay routing for computer-based communication networks
Filed Jul 2003 · granted May 2011Patent, expired (term ended)
Published applicationUS 2011/0228678 A1
OVERLAY NETWORK
Filed May 2011 · published Sep 2011Published application
This documentUS 8,599,697 B2
Overlay network
Filed May 2011 · granted Dec 2013Lapsed, fee not paid
Earlier publications, parents and continuations. None of them can still be enforced, or this patent would not be listed.
US patents it cites 0
No US citations on record.
Sources & verification
Verification
- The USPTO Official Gazette of January 27, 2026 lists it as expired on December 3, 2025 for an unpaid maintenance fee.
- It isn't on any reinstatement notice published since.
- Its 8 US relatives have also lapsed, expired or never issued.
- Rechecked against USPTO records every day.
- We check US rights only. Check foreign counterparts before selling abroad.
Confirm it yourself
- Open the file history on Patent Center.
- The status should read "Patent Expired Due to NonPayment of Maintenance Fees Under 37 CFR 1.362".
- Check the documents for any later petition to revive or reinstate.
Official USPTO records
USPTO Official GazetteNotice of Expiration of Patents Due to Failure to Pay Maintenance Fee, issue of January 27, 2026.Where this listing came fromMaintenance fee recordEnter the patent number to see its fee history.USPTO FeesFull published documentText and every drawing sheet as a PDF.USPTOFile historyStatus, office actions, notices, fee records and petitions.USPTO Patent CenterPatent Public Search recordSearchable full text and bibliographic data.USPTO
Everything on this page comes from the documents linked above.